Monthly outlook for Herron, MT: average high 55.3°, average low 38.1°. That is 0.7° below the climate normal for October. Precipitation is expected on 3 days (about 0.3 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 9 October (80.3°), the coolest 16 October (24.9°).
55.3°/38.1°
Average high / low
−0.7°
Below normal
3 / 2
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
51.4°
57.1°
-3.2°
18 October – 27 October
61.9°
54.4°
+4.1°
28 October – 6 November
at normal
47.5°
—
October records over 66 years
86.4°7 October 1980All-time high
-16.1°29 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Kremlin (15 mi).
Fri, 0980° / 48°0
80 °
Herron, Friday, 9 October
Partly cloudy. High 80°, low 48°.
Pressure29.47 inHg
Wind14.2 mph SW
Humidity27%
Visibility6.2 mi
Dew point37°
Sat, 1050° / 39°0.05
50 °
Herron, Saturday, 10 October
Light rain. High 50°, low 39°.
Pressure29.83 inHg
Wind11.1 mph NW
Humidity60%
Visibility6.2 mi
Dew point31°
Sun, 1140° / 36°0.09
40 °
Herron, Sunday, 11 October
Snow. High 40°, low 36°.
Pressure30.24 inHg
Wind10.7 mph NE
Humidity82%
Visibility6.2 mi
Dew point31°
Mon, 1242° / 34°0.01
42 °
Herron, Monday, 12 October
Light rain. High 42°, low 34°.
Pressure30.15 inHg
Wind10.2 mph SE
Humidity73%
Visibility6.2 mi
Dew point30°
Tue, 1352° / 33°0
52 °
Herron, Tuesday, 13 October
Clear. High 52°, low 33°.
Pressure30.06 inHg
Wind4.1 mph E
Humidity68%
Visibility—
Dew point35°
Wed, 1444° / 35°0.02
44 °
Herron, Wednesday, 14 October
Light rain. High 44°, low 35°.
Pressure29.74 inHg
Wind19.6 mph NW
Humidity86%
Visibility—
Dew point39°
Thu, 1538° / 28°0.17
38 °
Herron, Thursday, 15 October
Snow. High 38°, low 28°.
Pressure30.53 inHg
Wind21.8 mph NW
Humidity75%
Visibility—
Dew point28°
Fri, 1642° / 25°0
42 °
Herron, Friday, 16 October
Mostly clear. High 42°, low 25°.
Pressure30.71 inHg
Wind6.7 mph SW
Humidity57%
Visibility—
Dew point22°
Sat, 1752° / 30°0
52 °
Herron, Saturday, 17 October
Clear. High 52°, low 30°.
Pressure30.39 inHg
Wind4.5 mph E
Humidity40%
Visibility—
Dew point20°
Sun, 1859° / 37°0
59 °
Herron, Sunday, 18 October
Clear. High 59°, low 37°.
Pressure29.88 inHg
Wind11.6 mph SW
Humidity39%
Visibility—
Dew point26°
Mon, 1954° / 41°0
54 °
Herron, Monday, 19 October
Overcast. High 54°, low 41°.
Pressure30.06 inHg
Wind14.7 mph NW
Humidity64%
Visibility—
Dew point37°
Tue, 2061° / 40°0
61 °
Herron, Tuesday, 20 October
Clear. High 61°, low 40°.
Pressure30.03 inHg
Wind13.7 mph SW
Humidity50%
Visibility—
Dew point34°
Wed, 2162° / 45°0
62 °
Herron, Wednesday, 21 October
Overcast. High 62°, low 45°.
Pressure30.03 inHg
Wind11.9 mph W
Humidity44%
Visibility—
Dew point33°
Thu, 2268° / 45°0
68 °
Herron, Thursday, 22 October
Clear. High 68°, low 45°.
Pressure30.00 inHg
Wind10.2 mph SW
Humidity33%
Visibility—
Dew point30°
Fri, 2367° / 49°0
67 °
Herron, Friday, 23 October
Clear. High 67°, low 49°.
Pressure29.85 inHg
Wind16.3 mph SW
Humidity29%
Visibility—
Dew point28°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2454° / 34°0.03
54 °
Herron, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high54°
Average low34°
Average precipitation0.03 in
Chance of precipitation18%
Record high78° (2007)
Record low14° (2020)
Sun, 2553° / 35°0.01
53 °
Herron, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high53°
Average low35°
Average precipitation0.01 in
Chance of precipitation7%
Record high76° (1990)
Record low7° (2020)
Mon, 2651° / 35°0.04
51 °
Herron, Monday, 26 October
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.04 in
Chance of precipitation18%
Record high72° (1960)
Record low9° (2020)
Tue, 2751° / 33°0.04
51 °
Herron, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high51°
Average low33°
Average precipitation0.04 in
Chance of precipitation17%
Record high69° (2024)
Record low10° (2023)
Wed, 2850° / 31°0.02
50 °
Herron, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high50°
Average low31°
Average precipitation0.02 in
Chance of precipitation17%
Record high71° (1973)
Record low-6° (1991)
Thu, 2949° / 31°0.03
49 °
Herron, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.03 in
Chance of precipitation17%
Record high72° (2008)
Record low-16° (1991)
Fri, 3049° / 30°0.02
49 °
Herron, Friday, 30 October
Climate normal for this date — 60-year average.
Average high49°
Average low30°
Average precipitation0.02 in
Chance of precipitation10%
Record high68° (1983)
Record low-15° (1991)
Sat, 3147° / 30°0.04
47 °
Herron, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.04 in
Chance of precipitation18%
Record high66° (2008)
Record low-11° (1984)
Sun, 0147° / 30°0.01
47 °
Herron, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.01 in
Chance of precipitation12%
Record high68° (1965)
Record low-18° (1984)
Mon, 0247° / 30°0.02
47 °
Herron, Monday, 2 November
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.02 in
Chance of precipitation20%
Record high65° (1978)
Record low-18° (1991)
Tue, 0348° / 30°0.02
48 °
Herron, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.02 in
Chance of precipitation15%
Record high66° (1983)
Record low-9° (1991)
Wed, 0448° / 32°0.03
48 °
Herron, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high48°
Average low32°
Average precipitation0.03 in
Chance of precipitation15%
Record high69° (1975)
Record low5° (2003)
Thu, 0546° / 30°0.04
46 °
Herron, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high46°
Average low30°
Average precipitation0.04 in
Chance of precipitation20%
Record high68° (1975)
Record low-10° (2003)
Fri, 0645° / 28°0.02
45 °
Herron, Friday, 6 November
Climate normal for this date — 60-year average.
Average high45°
Average low28°
Average precipitation0.02 in
Chance of precipitation17%
Record high67° (2010)
Record low3° (2003)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Herron, MT are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Herron, MT since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.